Home / 20,687,312.09-28,548,490.47-11,990,529.20

Finding the Fourth Proportional to 20,687,312.09, 28,548,490.47 and 11,990,529.20

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Solution

The fourth proportional to 20,687,312.09, 28,548,490.47 and 11,990,529.20 is: 16,546,930.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,312.09 : 28,548,490.47 = 11,990,529.20 : x
  2. Step 2: Convert to fraction form
    20,687,312.09/28,548,490.47 = 11,990,529.20/x
  3. Step 3: Cross multiply
    20,687,312.09x = 28,548,490.47 × 11,990,529.20
  4. Step 4: Simplify right side
    20,687,312.09x = 342,311,508,596,456.69
  5. Step 5: Solve for x
    x = 342,311,508,596,456.69/20,687,312.09
  6. Step 6: Final answer
    x = 16,546,930.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.